This deck is a blast - great job. I would like to point out the front page system for Brawl is an unfair mess. This deck should be represented there. Never lost to the Cow King, not even close. Some tips for run deck:

Seems better at mulligan and opening to focus on removal/stall, remember you will need each hero to get down to 15 so you can't just pound the snot out of him with pirates or the like, or build a massive board.

Anyfin is the finisher, it kills Cow King. Otherwise you will suffer the same fate as the dude who had to go to the Moo Moo farm and get the cheese for the Horadric Hamburger (was supposed to be a cheeseburger, but then Hell Bovine*)

Don't forget stupid nine card secret. If you get that, you rule the game from that point.

If you are masochistic enough to want to be the Cow King, you need to make sure Sylvanas is on board before you pop the secrets. Haven't pulled it off yet, rumor is it has to be the 15 health brawl as the final secret. Will update.

*The Horadrim wandered far and wide to gather the finest ingredients for their feast. Only the lone traveler sent to the Moo Moo farm failed to return. Diablo had laid a trap for the Horadrim, the Hell Bovine, who struck the traveler down before he could gather the final ingredient: cheese.

Deck worked really well. Helps to have the list of the wanderer's secrets pulled up. I subbed sylvanas for a azure drake, since I wanted a second spell damage/battelcry minion. In addition cycle was helpful in digging for the sole stealth minion. Not exactly sure why the pirate package is in the deck as it feels suboptimal with only three weapons, two of which cost 4. I was almost never able to trigger buccaneer. That being said, once I figured out the deck it was cow city in no time.